Azimuh and elevation DOA estimation

[Alberich]

Hi all,
I am looking for some DOA estimation algorithms , but for 2D array, ie I want to estimate the azimuth and the elevation, if some one has some experience in that field his help will be welcomed.
thans a lot and best regards

 

[GroundCtrl]

Is the DOA the same as Direction of Arrival? What is the question? Do you want to know how to estimate azimuth and elevation from 2d raster coordinates?

 

[Alberich]

hello,
excuse me for lack of expression,
yes i mean by DOA direction of arrival, what i want to know is how to estimate the elevation and azimuth by using a rectangular array, ie is thereany algorithm like esprit or root music that performs such process??

thanks in advance and best regards

 

[scholar_a]

Dear Alberich,

Look, in order to estimate the DOA you can find ITD (Interaural time difference) .
So you can estimate ITD instead of DOA, then DOA will be calculated from ITD by very simple formulas. for example for a linear array : t=dcosθ/v
d: distance between two microphones
v=sound speed
θ=DOA
t=ITD
in order to calculate t (ITD) you sould cross-crollate the two signals from two microphones then using peak detection you can find the delay (t-ITD) beween two signals.

Good luck

 

[scholar_a]

Dear Alberich,

could you get your answer? or you want exactly to estimate the azimuth and elevation? In this case, maybe I can help you but it will take about 2 or 3 days.

Regards